| Elmenhorst | |
| Image Coa: | DEU Elmenhorst (Lauenburg) COA.svg |
| Coordinates: | 53.5333°N 41°W |
| Image Plan: | Elmenhorst in RZ.svg |
| State: | Schleswig-Holstein |
| District: | Herzogtum Lauenburg |
| Amt: | Schwarzenbek-Land |
| Elevation: | 47 |
| Area: | 13 |
| Postal Code: | 21493 |
| Area Code: | 04151, 04156 |
| Licence: | RZ |
| Gemeindeschlüssel: | 01 0 53 027 |
| Website: | www.amt-schwarzenbek-land.de |
| Mayor: | Richard Hamester |
Elmenhorst is a municipality in the district of Lauenburg, in Schleswig-Holstein, Germany.